Cheap Flights from Tri-Cities (TRI) to San Juan (SJUA)

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Flight deals from Tri-Cities to San Juan

Looking for a cheap last-minute deal or the best return flight from Tri-Cities Airport to San Juan? If you want to travel next month, return fares start from £338. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Tri-Cities to San Juan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Tri-Cities to San Juan flights are currently cheapest in August.

Kingsport to San Juan: Flight information

The things to know before you go.
Cheapest flight found£87
Cheapest month to flyAugust

Finding cheap flights from Tri-Cities to San Juan: Frequently asked questions

There are 6 airports in San Juan: San Juan Isla Grande, San Juan Luis Munoz Marin, Roosevelt Roads, Ponce, Vieques, and Culebra.
The best price we found for a return flight from Tri-Cities to San Juan is £235. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Tri-Cities to San Juan. But we found flights with one or more stops from £235.
As of August 2026, there are no flights flying from Tri-Cities to San Juan.
The cheapest month to fly from Tri-Cities to San Juan is usually August.
If you're flying from Tri-Cities Airport, the cheapest airport near San Juan is San Juan Luis Munoz Marin – which is 7.0 miles away from the centre of San Juan. We've found flights into this airport from £235.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Tri-Cities Airport to San Juan on Monday, 10 August 2026.
No airlines currently offer direct flights between Tri-Cities Airport and San Juan. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Juan but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Juan is around 40 days in advance, so don’t leave your flight to the last minute.

In August, the average temperature is usually around 28°C. August is typically the warmest month in San Juan, when it usually averages around 29°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging 23°C. The rainiest month is September.
Currently, Breeze Airways offers the cheapest flight tickets to San Juan.

Travelling from Tri-Cities Regional Airport (TRI) to San Juan: what you need to know

  • San Juan is one hour ahead of Kingsport, where Tri-Cities Regional Airport is located. San Juan follows the UTC-4 timezone.

  • Give yourself plenty of time to catch your TRI to San Juan flight. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.

  • During popular months like June, it's a good idea to get to the airport even earlier. Arrive two hours before domestic departures and four hours ahead of international flights whenever you're flying during high season in general.

  • Located around 16 kms (10 miles) from the centre of Kingsport, TRI can be reached in about 15 minutes by car (depending on traffic). Travelling on public transport will take roughly 35 minutes.

  • Planning to catch an early flight from Tri-Cities Regional Airport to San Juan? Avoid rushing to the airport (and sneak in some extra precious sleep) by choosing one of these hotels close to TRI:

  • 81% of flights departing from Tri-Cities Regional Airport arrive at their destination according to schedule. Given its impressive on-time stats, you're unlikely to experience delays when flying out of TRI.

  • TRI is located at 2525 Tennessee 75.

How to find the cheapest flights from Tri-Cities Regional Airport (TRI) to San Juan

  • £87 is currently the best price for a one-way Tri-Cities Regional Airport to San Juan flight. A return plane ticket starts from £235. These fares may change depending on availability.

  • To find cheap flights from TRI to San Juan, book as early as you can. Airlines typically offer lower fares when tickets are first released.

  • Scoring cheap tickets from Tri-Cities Regional Airport to San Juan is more likely if you're flexible with your dates. Use the 'Whole month' search function to access the lowest prices throughout the month and walk away with a fantastic deal.

  • Save time looking for cheap flights from TRI to San Juan by creating a Price Alert. You'll receive an email or push notification on the app when a new discounted fare appears.

  • Save money on your flight from Tri-Cities Regional Airport to San Juan with the help of our filters. Choose your preferred departure time, duration and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in San Juan

Luis Munoz Marin International Airport (SJU)

  • Luis Munoz Marin International Airport (SJU) to the centre of San Juan takes around 20 minutes by car. The centre is roughly 11 kms (7 miles) away.

  • It typically takes 1 hour if you're using public transport.

  • If you have a late flight from Tri-Cities Regional Airport to San Juan, nothing beats the convenience of staying close to the terminal. Grab your luggage from the carousel and then be showered and resting soon after at one of these accommodation options near SJU:

  • Reserving your vehicle from Luis Munoz Marin International Airport about two weeks before your flight from TRI to San Juan can help you get the best possible rate.

Best time to go to San Juan

  • December is the quietest month for flights from Tri-Cities Regional Airport to San Juan, while March is the most popular. Figure out the best time to go to San Juan based on whether you like a bustling atmosphere or a more laid-back vibe.

  • Before booking a Tri-Cities Regional Airport to San Juan plane ticket, think about what kind of weather works for you. August is the warmest month in San Juan, with temperatures ranging from 24ºC to 32ºC.

  • February sees average temperatures of between 21ºC and 28ºC. Look for a cheap ticket from TRI to San Juan around that time if you like cooler conditions.

More about San Juan

  • After booking your flight from Tri-Cities Regional Airport to San Juan, choose a hotel that combines comfort with a great location. Make one of these accommodation options your base for exploring San Juan:

  • Esperanza Beach and Balneario El Escambron are just two of the top-rated attractions to add to your San Juan must-do list. Keep the adventure rolling by checking out Escambron Green.

Explore more of Puerto Rico

  • Aguadilla is just one of the many places in Puerto Rico waiting to be explored once you've taken in the sights of San Juan. Around 113 kms (70 miles) away to the west, check out popular attractions including Silla Aguadilla, Bridges Surf Beach and Playa Rompe Olas.

  • If you're interested in discovering another major destination in Puerto Rico, consider Isabela, roughly 105 kms (65 miles) west of San Juan. Playa montones, Shore Island Beach and Guajataca Forest Reserve are the start of reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.